Dewey Decimal System

The Dewey Decimal System is a numerical classification system that is used to group library materials by subject, so that all of the materials on the same subject will be placed on the shelf together. The table below shows the numbers that correspond to general subject areas.

Keep in mind that there are over 77,000 items here at the Chaffey Library so you will likely be more successful in finding what you need by using our Catalog to locate books on a topic rather than browsing our collection.

000 General Works
010 Bibliographical science and technique
020 Library science
030 General encyclopedia
040 General collected essays
050 General periodicals
060 General societies, museums
070 Newspaper journalism
080 Collected works
090 Manuscripts and rare books

100 Philosophy, Esthetics
110 Metaphysics
120 Metaphysical theories
130 Branches of psychology
140 Philosophical topics
150 General psychology
160 Logic
170 Ethics
180 Oriental and ancient philosophy
190 Modern philosophy

200 Religion
210 Natural religion
220 Bible
230 Doctrinal theology
240 Devotional theology
250 Pastoral theology
260 Christian church
270 Christian church history
280 Christian churches and sects
290 Non-Christian churches and sects

300 Social science, sociology
310 Statistics
320 Political science
330 Economics
340 Law
350 Public administration
360 Social welfare
370 Education
380 Commerce
390 Customs and folklore

400 Linguistics
410 Comparative linguistics
420 English language
430 German, Germanic languages
440 French, Provencal
450 Italian, Rumanian
460 Spanish, Portuguese
470 Latin, other Italic
480 Greek, Hellenic group
490 Other languages

500 Pure Science
510 Mathematics
520 Astronomy
530 Physics
540 Chemistry, crystallography, mineralogy
550 Earth sciences
560 Paleontology
570 Anthropology and biology
580 Botany
570 Zoology

600 Applied science
610 Medical sciences
620 Engineering
630 Agriculture
640 Home economics
650 Business and business methods
660 Chemical technology, industrial chemistry
670 Manufactures
680 Manufactures (continued)
690 Building construction

700 Arts and Recreation
710 Landscape Architecture
720 Architecture
730 Sculpture
740 Drawing, decorative art
750 Painting
760 Prints and print making (Graphic arts)
770 Photography
780 Music
790 Recreation

800 Literature
810 American Literature
820 English literature
830 German, other Germanic literature
840 French, Provencal, Catalan literatures
850 Italian, Rumanian, Romansch literature
860 Spanish, Portuguese literatures
870 Latin and Italic literatures
880 Greek, Hellenic group literatures
890 Literature of other languages

900 History
910 Geography
920 Biography
930 Ancient world history
940 European history
950 History of Asia
960 African history
970 North American history
980 South American history
990 History of Oceania

For more information, visit the Dewey Decimal Classification System Home Page.